Vapor electric device.



E. WE!NTRAUB.

VAPOR ELECTRIC DEVICE.

APPLICATION FILED MAR. 21. I914 1, l'FESfiSO, Patented Mar. 21, 1916.

VIZ/714155555: A'vvzwrazz 54 7M E2 Ef/EL IIZE/N TR A'UB HIE/T T TURNEK CGMPANY, A CGBPORATION 0F KEV-T YORK.

VAPOR ELECTRIC DEVZC'E.

j ag; Specification of Letters Patent.

Application filed March :27, 19M.

2'13 05 when; may (on/term:

liv ll lmuwu lihul l] l iAiu'fHWL vi izvu of tin l uilavl l 'uiiies res lifi'iilh hum uf ll bay Stale (if iiiasszicl wsila have im'vulwfl certain mm and useful imp; hvuwuls in Caper "llwii'ic Devices of \x'hir-li ll-.0- follmviug is specification,

My u'vshit iXH'LililMl whites to Ja pur (lVVtl'li lPYiCCS :mi'l pui'tivulai'ly t0 Yap-01' lumps whi li rmiluiu volatile halogen Q0111 pounds.

in a impending application Serial N0. H27 795 ii ui concurrently herewith by i T11 A. L 13,

50 in the siding? cui'y quartz lamp and to even =1 larger iQ' in the lamp containing: hands. 'l ")7" ".7 v 1 have found limit piilhlllll ll and the mama of the platinum group, :iltlimigh, they l1 alumni QOVHPQUYi lS, hnhd, vapors ll: film are capable of fol-wing are not affected by filie are at the tmnpmaluie m h the :mtxie is running :40 that skill: an anode may be used in a high pressure lump containing Zia/lid vapors wilhuul, disintegrating and blackening; the tube.

One form of vapor electric device equipped with an anode of platinum or a metal of the platinum group in accordance with my in\ cution iS shmvn in section in the accompanying clmwinu.

Ordinary 'ihiti imn (if caiiinincrce contains impurities, especially iron, which are iii:- tzickod by the halide; and cause slight black suing so that while vommei-cial plai'imim can be), used. it is much pi'csfni-ziltul to use chemisully iuie material.

In an ordinary im- L2 mercury arc lamp it is important to have the anode of :1 metal capable of Withsmnding a ilrucli higher temperutui'athan the nm'mil temgfiemliiire air Paientml liiar, 2i, 191%.

Serial 7%. 8224621.

had its equimined when the lamp has lana -l me the initial stni'iiig 15 10h lm-sl er'l'h m the run: 412g This fact stands seriously in the lug n PlfilDUTXi anode in the 01mil -imp. i 1 v in lmlhi v lluz c m ihui inure :i 11inch T all tween the satin-Ling Curr? i and the cumant so illlll the platinum anmle can bi: kept at a gnor'l i'orl heat during: the 090:5 tion 05 lhe lamp without fi lai'lllg l h it itwuuld i'mich too high ii temperature liejjvoiifii its melting point during the initial pizz'ior l before the equilibrium i: reached.

large (mu-exit lump it in/21y be the melting puint oi the i'fiSQS ii; may be (h:- n the auwunl/ platinum a (if maul. f: p 037" My 0i: 1 WEB th s in a tungsten 50m aml 2i Oil 791118 can he 11: h if 1 ii, ('5 1 :1 invenlio not limilmi to in} parlimilm' form 0% 01 eleci ric iievice, the (imwing shows for iurp qe of illustration a lamp Sf the high ITQSSHIG mercury vapur type.

The mivelo'p 1 Sha n in drawing (in Lrily Consists of fused quartz as ea matei; l XIZOIQ- refmcimy than gla is 318063 saz'y iJ'QCmlE-B m? the high illfllfiliflftiliK-B wii'cli the device is operated. The lamp provided at ene emi with th cathede chamber 2 filled with mercury, 01 an :imuigam T a catiiode chamber 2 is so propoiuioned that the coolest portion c-f the mercury pool is high-enough ta maintain th halid compounds vaporizml The anotle 4 consists either entirely of platinum, 01" has a. platinum surface Lentlingdn wires and 6 for the cailmle and anode respectively, are sealed lXltO the cui'ehip by the, so-called; grilled soul being; suinjmndci l l; 21 glass such as :1 sodium-magnesium bore-silicate, which in turn 4 nerl to the quartz by a series in? zones ea h containing an lDCZ ing zhumml: of in which passes from the seal to the quartz QmelQp. The lending-in 'WH'G is preferably tungsten aiui the platinum anode is joined tthe leadingin Wire either hv a l jOlnt or mechanically.

l a lam is provided vvith a halogen npnund oi a metal which at the temperathe cathode is sutliciently volatile to insure the presence of vapor of the halogen compound in the arcing space during the operation of the device. As described in the above mentioned Devers application the halogen compounds of various metals such as tantalinn, niobium, bismuth, antimony, arsenic and aluminum may he used.

The amount of halogen compounds Will be varied in the nature of the device and the conditions of its operation but in most cases between about .007 and .1 gram will give a good result.

W hat ll claim as new and desire to secure by Letters Patent of the United States, lei-- l. A vapor electric device comprising an inclosing envelop, an easily vaporizable cathode, an anode at least the surface layer of which consists of platinum, and a halogen compound in said envelop having a boiling point approximating the operating temperature of the lamp.

2. A high pressure vapor electric device containing a halogen compound. having a boiling point at least as high as the coolest partof the cathode during the operation of the device and having cooperating electrodes, one of which consists of platinum.

3. A mercury vapor lamp comprising a silica envelop, a mercury cathode, a quantity of tantalum chlorid and an anode, at least the surface layer of which consists of platinum.

In witness whereof, I hereunto set my hand this twenty fourth day of March, 1914.

EZECHIEL WEINTRAUB,

Witnesses WM. G. GARTNER, JOHN A. hIoMANUs, Jr. 

